1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
|
/* dynamic SQL test program
*
* Copyright (c) 2000, Christof Petig <[email protected]>
*
* $Header: /cvsroot/pgsql/src/interfaces/ecpg/test/Attic/dyntest2.pgc,v 1.4 2003/05/23 15:22:38 meskes Exp $
*/
#include <stdio.h>
#include <stdlib.h>
exec sql include sql3types;
exec sql include sqlca;
static void error()
{
printf("\n#%ld:%s\n",sqlca.sqlcode,sqlca.sqlerrm.sqlerrmc);
exit(1);
}
int main(int argc,char **argv)
{
exec sql begin declare section;
int COUNT;
int INTVAR, BOOLVAR;
int INDEX;
int INDICATOR;
int TYPE,LENGTH,OCTET_LENGTH,PRECISION,SCALE,NULLABLE,RETURNED_OCTET_LENGTH;
int DATETIME_INTERVAL_CODE;
char NAME[120];
char STRINGVAR[1024];
float FLOATVAR;
double DOUBLEVAR;
char QUERY[1024];
exec sql end declare section;
int done=0;
FILE *dbgs;
exec sql var BOOLVAR is bool;
if ((dbgs = fopen("log", "w")) != NULL)
ECPGdebug(1, dbgs);
snprintf(QUERY,sizeof QUERY,"select * from %s",argc>1?argv[1]:"pg_tables");
exec sql whenever sqlerror do error();
exec sql allocate descriptor MYDESC;
exec sql connect to mm;
exec sql prepare MYQUERY from :QUERY;
exec sql declare MYCURS cursor for MYQUERY;
exec sql open MYCURS;
while (1)
{ exec sql fetch in MYCURS into sql descriptor MYDESC;
if (sqlca.sqlcode) break;
exec sql get descriptor MYDESC :COUNT = count;
if (!done)
{ printf("Count %d\n",COUNT);
done=1;
}
for (INDEX=1;INDEX<=COUNT;++INDEX)
{ exec sql get descriptor MYDESC value :INDEX
:TYPE = type,
:LENGTH = length, :OCTET_LENGTH=octet_length,
:RETURNED_OCTET_LENGTH=returned_octet_length,
:PRECISION = precision, :SCALE=scale,
:NULLABLE=nullable, :NAME=name,
:INDICATOR=indicator;
printf("%2d\t%s (type: %d length: %d precision: %d scale: %d\n"
"\toctet_length: %d returned_octet_length: %d nullable: %d)\n\t= "
,INDEX,NAME,TYPE,LENGTH,PRECISION,SCALE
,OCTET_LENGTH,RETURNED_OCTET_LENGTH,NULLABLE);
if (INDICATOR==-1) printf("NULL\n");
else switch (TYPE)
{
case SQL3_BOOLEAN:
exec sql get descriptor MYDESC value :INDEX :BOOLVAR=data;
printf("%s\n",BOOLVAR ? "true":"false");
break;
case SQL3_NUMERIC:
case SQL3_DECIMAL:
if (SCALE==0)
{ exec sql get descriptor MYDESC value :INDEX :INTVAR=data;
printf("%d\n",INTVAR);
}
else
{ exec sql get descriptor MYDESC value :INDEX :FLOATVAR=data;
printf("%.*f\n",SCALE,FLOATVAR);
}
break;
case SQL3_INTEGER:
case SQL3_SMALLINT:
exec sql get descriptor MYDESC value :INDEX :INTVAR=data;
printf("%d\n",INTVAR);
break;
case SQL3_FLOAT:
case SQL3_REAL:
exec sql get descriptor MYDESC value :INDEX :FLOATVAR=data;
printf("%.*f\n",PRECISION,FLOATVAR);
break;
case SQL3_DOUBLE_PRECISION:
exec sql get descriptor MYDESC value :INDEX :DOUBLEVAR=data;
printf("%.*f\n",PRECISION,DOUBLEVAR);
break;
case SQL3_DATE_TIME_TIMESTAMP:
exec sql get descriptor MYDESC value :INDEX
:DATETIME_INTERVAL_CODE=datetime_interval_code,
:STRINGVAR=data;
printf("%d \"%s\"\n",DATETIME_INTERVAL_CODE,STRINGVAR);
break;
case SQL3_INTERVAL:
exec sql get descriptor MYDESC value :INDEX :STRINGVAR=data;
printf("\"%s\"\n",STRINGVAR);
break;
case SQL3_CHARACTER:
case SQL3_CHARACTER_VARYING:
exec sql get descriptor MYDESC value :INDEX :STRINGVAR=data;
printf("\"%s\"\n",STRINGVAR);
break;
default:
exec sql get descriptor MYDESC value :INDEX :STRINGVAR=data;
printf("<\"%s\">\n",STRINGVAR);
break;
}
}
}
exec sql close MYCURS;
exec sql deallocate descriptor MYDESC;
if (dbgs != NULL)
fclose(dbgs);
return 0;
}
|
